1. Chromosome abnormalities;Hook, E.B.,1992
2. Rates of chromosome abnormalities at different maternal ages;Hook, E.B.;Obstet Gynecol,1981
3. Down syndrome rates and relaxed selection at older maternal ages;Hook, E.B.;Am J Hum Genet,1983
4. Maternal age specific rates for chromosome aberrations and factors influencing them: report of a collaborative European study on 52965 amniocenteses;Ferguson-Smith, M.A.; Yates, J.R.W.,1984
5. Diagnosis of Down syndrome and other aneuploidies using quantitative polymerase chain reaction and small tandem repeat polymorphisms;Mansfield, E.S.;Hum Mol Genet,1993